Why oh WHY do the arrows in this TORQUE problem keep alternating between SINE and COS This is what they did: I understand the whole Torque = F * r, but WHY (at the top of the diagram) is the arrow pointing up = (25 N)cos 30 and NOT sin and why is the arrow pointing to the right underneath it (25 N)sin 30 and not cos??????? Same goes for the other arrows...I thought the x axis (horizontal) was ALL COSINE and the y axis (vertical) was SINE. This is so frustrating!! They keep doing this in ALL of their problems and it really confuses me. They keep changing it from left to right...please help!!